Begonia corallina is a cane type begonia. They get their name from their stems, which grow tall and woody with prominent bamboo like joints. The plants are erect on multiple stems reaching 5 foot or more. It is a native of Brazil.
Blooming Time: Spring-Autumn. They bloom profusely with large cluster of red flowers. Clusters of flowers often reach 18 inches across.
Culture: Begonia corallina is one of the easiest of the begonia species to grow. They need a rich, porous, well-drained soil and filtered shade. At the greenhouse we use a soil mix consisting of 2 parts peat moss to 1 part loam to 2 parts sand or perlite. To this mix we add 1 cup of 14-14-14 Osmocote slow release fertilizer to each .01 cu yards of soil. The soil should be kept moist at all times, but not soggy. We also fertilize weekly with a balanced fertilizer diluted to ½ the strength recommended on the label (all year long). Since the plants get large you may need to stake individual canes if the flower clusters get too heavy. Old canes that have gone barren should be pruned to 2 leaf joints in early spring.
Propagation: Begonia corallina is easily propagated by leaf, stem and rhizome cuttings.
Begonia corallina was featured as Plant of the Week September 8-14, 2000.
Guide to Past Plants-of-the-Week:
Cal's Plant of the Week was provided as a service by the University of Oklahoma Department of Microbiology & Plant Biology and specifically Cal Lemke, who used to be OU's botany greenhouse grower and an avid gardener at home as well. If the above links don't work, then try the overview site. You may also like to look at the thumbnail index. ©1998-2012 All rights reserved.